Ernest wenigmann



(No Model.)

B. WENIGMANN. 1GB BIGK.

Patented June 28, 1892.

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UNITED STATES PATENT OFFICE.

ERNEST VVENIGMANN, OF NEW. YORK, N. Y.

ICE-PICK.

SPECIFICATION forming part of Letters Patent No. 477,919, dated June 28,1892.

Application filed February 5, 1892- Serial No. 420,468- (No model.) 7

T0 at whom it-may concern.-

Be it known that I, ERNEST WENIGMANN, of New York city, New York, haveinvented an Improved Ice-Pick, of which the following is aspecification,

This invention relates to an ice-pick so constructed that thecutting-blade can be gradually forced into the ice without beingreciprocated, as heretofore. Thus chips will not fly off, and the icecan be broken upon a plate or other fragile support without danger tothe latter.

The invention consists in the various features of improvement more fullypointed out in the claim.

In the accompanying drawings, Figure 1 is an elevation, partly insection, of my improved ice-pick; Fig. 2, a longitudinal section throughthe coupling; and Fig. 3, a cross-section on.

line as a', Fig. 2. V

The letter a represents a rod provided at its top and bottom withenlargements or collars a a Between these collars the rod is embraced byan annular hammer b, that may be reciprocated upon the rod by hand. Atits upper end the rod a terminates in a handle a while at its lower endit is provided with a coupling, by which an awl-shaped cutter 0 may besecured to it. This coupling is shown to consist of a tube (Z,terminating in four (more or less) spring-jaws cl. The tube as well asthe spring-jaws are threaded on their outer surface. The tube isconnected to the lower threaded end of the rod by the collar a which ismade in the form of a nut, while the spring-jaws d are tapered and aresurrounded by a tapering nut c. It will be seen that the nut on has adouble function in forming a striking-surface for the hammer and inattaching the coupling to the rod. By screwing the nut e down the jawscl are permitted to diverge and to thus loosen their hold upon the tool;but when the nut is screwed up the jaws are tightly forced against thetool to secure the same to the rod a.

In use the pick is placed with the awl 0 upon the ice, and then thehammer b is rapidly reciprocated to strike the lower shoulder a and togradually force the awl into the ice. The latter is thus broken rapidly,delicately, and without producing chips.

What I claim is The combination of a rod with a surrounding annularhammer, a coupling for the attachment of an aw], and a nut thatconstitutes a shoulder for the hammer, and a means for attaching the rodto the coupling, substantially as specified.

ERNEST WENIGMANN.

\Vitnesses:

F. v. BRIEsEN,

A. J ONGHMANS.

